Gas-retort furnace.



R. M; BROOKE. Y

, GAS BETOBT FURNAGE. APIfLIoATIoN FILED MAR. 19, 1909.

Patented Feb. 15, 1910.

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APPLICATION FILED 111111.19. 1909.

Patented Feb. 15, 1910.

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R. M. BROKE. GAS RETORT FURNAGE.

APPLICATION FILED MAR.19,1909.

Patented Feb.15,1910.

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11. M. BROOKE. GAS RETORT FURNAGE.

APPLICATION FILED MAR. 19,1909.

Patented Feb.15,1910.

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, each ,oft V eheatin UNT anni one BEUBEN MITCHELL BROOKE, 0F WEST VALE,NEAR HALIFAX, ENGLAND. ASSIGNOR TO ROBERT DEIVIPSTER 8o SONS, LIMITED,OF ELLAND, ENGLAND.

GAS-RETORT FURNACE.

Specication ofLetters Patent.

Patented Feb. 15, 1910..

Application filed March 19, 1909. Serial No. 484,495.

To all whom it .may concern.'

Be it known that I, RnUnN -Mirorrnnn BROOKE, residing at GladstoneHouse, Roch-l dale Road, lVest Vale, near Halifax, in the county ofYork, England, have invented certain new and useful Improvements inGas-Retort Furnaces; and I do hereby de-v glare the following lto be afull, clear, vand exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

This invention relates to the heating of vertical retorts used in themanufacture of gas/'or coke and for like urposes, its object eing torovide that t e heat applied to v chambers or compartments 'intowvhichtie setting is usually divided,'an ;l4thev draft upon each of suchcomartments, shall be capable of separate reguation.`

For regulating the draft upon the ditferent compartmentsl (as dempersclose to the compartments-'that is between the compartments and theregenerator-would be hable to become immovable in consequence of theheat to which they would be exposed) I divide the vregenerator intoseparate units, one for each compartment, and regulate by suitabledampers at the outlets of each of the Aregenerators the proportionatedraft upon each compartment, the general draft uponthe setting beingregulated by a main damper control ing the common outlet from all theregenerators to the chimney. These dampers are therefore only exposed tothe Waste gases after a portion of the heat thereof has been imparted tothe secondary air in passing through the regenerators.

In a vertical combustion cl'iamber, it is conceivable that the tendencyof the hot .gases torise might cause the upper compart prevent this.

ments of the setting to receive an undue proportion of such gases; Abutthe regulated dra-ft upon cach compartment is designed to Otherwise anyof the fol lowing' arrangements might be employed :--(l) lhe supplies ofproducer gas and secondany1 air opposite the upper compartment orcompartments might be reduced in order to compensatie for the surplusrising from lower levels. (2) The said supplies might be reduced at thelower compartments, giving av reduced pressure or partial vacuum,inducing a down-draft which would oppose such up- Ward tendenc f;

.the lower compartments.

or the equivalent might be adoptedof increasing the chimney draft on thelower compartments. (3) The openings from the combustion chamber intothe several compartments of thesetting may be of different sizes, as forinstance, they may be smaller for the upper compartment or compartments,relatively to those leading into (4) The combustion chamber might bedivided into a number of separate combustion chambers, one opposite eachcompartment of the setting; or the combustion chamber may be dividedinto two or more parts each part being common to several heatingcompartments. (5) The chamber may be provided with ballles forming anydesired number of sub-chambers having communications with each other,the baffles however preventing the formation of a definite upwardcurrent; this latter arrangement I at present consider preferable, andhave herein illustrated.

In the accompanying drawings, Sheets l to illustrate by way of examplethe application of my invention to a bed of 10 retorts, but I do notlimit. myself to the exact arrangements shown,A as the paths ol theheating gases .may be modified; Sheet (3 relates to a bed of 6 retorts,and Sheets 7, 8 and 9 toa bed of 2 retort's.

Figure l is a half-front elevation. Figs. 2, 3 and t are verticalsections taken respectively on the lines A-A., B-l), and C-C in Fig.Fig. 5 is a sectionalplan, the left side thereof being taken on the lineD-D and the right side on the line ll-E in Fig. 4. Fig. G is a sectionalplan of a bench of 6 retorts. Fig. 7 is a section on the line F-F inFig. 9. Fig. 8 is a section on the line G--Gr in Fig. 9. Fig. 9 is asection on the line I'I-ll in Fig. S.

Referring lirstly to'ltigs. 1 Ato 5, letter u indicates the furnace,which may be supplied with colie through the opening o, and with primaryair through the regulatingl boxes c and openings (l. lhc producer gaschamber c communicates with the combustion chamber f through opei'iingsg controlled by dampers' The setting is divided vertically into twoportions by a wall z', into which wall the two central retorts arebuilt, each portion having` a sepa rate vertical combustion chamber f sothat, if desired, only 4 or G retorts might be worked while theremainder were not in use. rllhis ar ungemein applies to settings of 8or more retorts, except that in the case of 8 or 12 retorts, .forexample, none of the retorts need be common to bothvhalves of thesetting. Settings of revverthan 8 retorts would not be thus divided, ande single combustion chamber centrally situated and common to all thecompartments would therefore suice, as illustrated in Fig. 6. Thesecondary air will or may be admitted at each side of the furnace, theamount required for various parts of the combustion chamber beingseparately controlled by adjustable slides j or in other suitablemanner; such air enters the regenerator passages c and passes throughthe openings l into the combustion chamber f which is provided withbaflies m asbefore mentioned. The ports Z and g are so arranged that thegases are ignited at point n (Fig. 5) in the back part of the comustionchamber j', the obgect being that each port o shall better receive itsshare of the products of combustion; but l do not limit myselftothisarrangenient of ports.

The setting is shown as being divided by horizontal partitions p intofour compartments at each side, each compartment having aseparate-regenerator; and each compertinent may be turther sub-dividedby one or any' number of partitions c, which latter partitions act assupports to the retort but do not extend to the regenerator. lThe numberof such compartments and sub-divisions, however, is ,immaterial to thisinvention, and will in practice be adapted to the requirements of eachparticular case.

Referring to Figs. 7, 8 and 9, the furnace a is charged with colte fromthe ground level, instead of from the top of the bench; theseparateproducer gas chamber (e) may be dispensed with, the producer gas goingdirectly to the combustion chamber f; and the Waste gases from all theregenerat'ors are collected, in one due immediately over the furnace,passing upward to the chimney. The heat regulating arrangements,enabling even orl uneven heating to be obtained at Will, are, however,the saine in principle in L this as in the designs of retort benchespre- :vfousl described.

In t e process of gas manufecture in vertical retorts having 'myimprovements .applied thereto, the heat applied to each art of theretort can be reguiated as desire so that the carbonization may proceedsimultaneously'throughout the length of the retort and, owing to theshort travel of the streams of heated gases coming from the combustionchamber into the setting, such streams need only have an ordinarycarbonizing heat, that tea/eve is, a lower initial temperature than inthe present known forms of settings for vertical retorts. ln the case ofcombustion chambers built at the top or bottom of the setting only, withconsequent long travel of heating gases, when a retort is neivly chargedwith a large volume of cold coal, the initial temperature of the streamsof heating gases inust of ne-i cessity be exceedingly high, in order tobe able to impart carbonizino' heats to retorts throughout their lengthot travel, and then leave the setting' at the required carbonizing heat.Moreover, in practice with long travels ot' heating gases, thetemperature of such a stream of gases, when first coming in contact witha newly charged retort, would probably drop below the vcarbonizing heat;and in consequence, the carbonization of the coal instead' of proceedingsimultaneously throughout the length of the retort, would begin at oneend and gradually extend over the length of the retort, with consequentwaste of time and inefficient results My retorts not being exposed tosuch excessivev ranges of temperature, will also be found more durablethan in the latter case, or in the case of the con'lpartments ot thesetting being converted into-combustion chambers, as has previously beenproposed in relation to vertical retorts.

I claim as my inventionf The combination, with a series of verticalrctorts, of a retort setting provided with.

internal partition walls through which the said retorts project andwhich form around,

thcin a series of horizontal super osed heating-chambers, a combustionchain er formed of a series of compartments which conimunicate with eachother, said compartments bein provided with separate outlet passages Wich connect them with the respective heating-chambers to which theypertain, and said compartments having also separate inlets for gas, andaregenerator formed' in sections each waste gas passage in the' said reenerator being connected with the outlet 0% one of the respectiveheatingchambers and being provided with a separate regulating damper,and each secondary air passagein the said regenerator being connected toone of the compartments in the said combustion chernltrer.1

In testimon whereof l aiiix my signature, in presence o tivo Witnesses.

nsUBEN MITCHELL esoolrn

